Question

WILL MARK BRIALIEST How do the planets Venus and Neptune differ in terms of atmospheric composition?

Answer 1

The atmosphere of Venus is mostly carbon dioxide, 96.5% by volume. Most of the remaining 3.5% is nitrogen. Early evidence pointed to the sulfuric acid content in theatmosphere, but we now know that that is a rather minor constituent of theatmosphere. 

The atmosphere of Neptune consists mainly of hydrogen and helium, but about 2.5-3% of the atmosphere is methane. Like Uranus, clouds in Neptune's atmosphere are composed of crystals of methane.

Answer 2

Answer:

Venus has carbon dioxide in its atmosphere, while Neptune has methane in its atmosphere.